A summary of the report published in medical journal, The Lancet Oncology, classified glyphosate and the insecticides malathion and diazinon as probably carcinogenic to humans (Group 2A), saying "there was limited evidence of carcinogenicity in humans for non-Hodgkin lymphoma.

The evidence in humans is from studies of exposures, mostly agricultural, in the USA, Canada, and Sweden published since 2001.